AT&T 6300 Programmer's Manual page 351

Syntax
filename
Remarks
Example
MERGE
Command
Merges the current program with another
program previously saved in ASCII format.
MERGE[filename]
specifies the file, and optionally a drive. If the drive is
omitted the MS-DOS default drive is assumed.
This command allows you to merge a program
saved (in ASCII format) on a disk, with the
program in memory. MERGE is similar to
LOAD, except that the program in memory is
not erased before the disk program is loaded.
Program lines in the disk program are inserted
into the resident program as if they were typed
on the keyboard. New lines are added and old
lines are updated.
This command allows you to include common
subroutines in all of your programs.
MERGE "B:ROOT\S1\SUBRTN"
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